Is it possible to setup user environ before any user shell and X session?

I mean, X sessions won't read /etc/profile, .profile at all. And user shells won't read /etc/X11/* at all. I want to set such environ vars that both Eclipse IDE and Maven CLI will see them. I know I can make an eclipse.sh wrapper, so everything can be executed from a shell, but I want to know whether this question is possible.

1 Answer
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Environment variable settings that affect the system as a whole (rather then just a particular user) should not be placed in any of the many system-level scripts that get executed when the system or the desktop session are loaded, but into

/etc/environment - This file is specifically meant for system-wide environment variable settings. It is not a script file, but rather consists of assignment expressions, one per line. Specifically, this file stores the system-wide locale and path settings.

Not recommended:

/etc/profile - This file gets executed whenever a bash login shell is entered (e.g. when logging in from the console or over ssh), as well as by the DisplayManager when the desktop session loads. This is probably the file you will get referred to when asking veteran UNIX system administrators about environment variables. In Ubuntu, however, this file does little more then invoke the /etc/bash.bashrc file.

/etc/bash.bashrc - This is the system-wide version of the ~/.bashrc file. Ubuntu is configured by default to execute this file whenever a user enters a shell or the desktop environment.